csv-analyzing（CSV analyzing 工具）

CSV Analysis

A guide for analyzing CSV files.

Load All Data

SELECT * FROM 'data.csv';

Select Specific Columns

SELECT column1, column2, column3
FROM 'data.csv';

Filter Rows

Retrieve only rows matching a specific condition:

SELECT *
FROM 'data.csv'
WHERE column1 = 'value';

Filter with multiple conditions:

SELECT *
FROM 'data.csv'
WHERE column1 = 'value'
  AND column2 > 100;

Combined Column and Row Filtering

SELECT column1, column2
FROM 'data.csv'
WHERE column1 LIKE '%keyword%'
  AND column3 IS NOT NULL;

Filter by Row Number

Retrieve a specific range of rows (e.g., rows 11-20):

SELECT *
FROM (
    SELECT *, row_number() OVER () AS rn
    FROM 'data.csv'
)
WHERE rn BETWEEN 11 AND 20;

Skip the first N rows:

SELECT *
FROM (
    SELECT *, row_number() OVER () AS rn
    FROM 'data.csv'
)
WHERE rn > 100;

Additional SQL Features

Refer to the official documentation only when you need other features.

Reference Documentation:

• SQL Introduction
• CSV Import